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DWI near metal implants has not been widely explored due to substantial challenges associated with through‐slice and in‐plane distortions, the increased encoding requirement of different spectral bins, and limited SNR.… Click to show full abstract
DWI near metal implants has not been widely explored due to substantial challenges associated with through‐slice and in‐plane distortions, the increased encoding requirement of different spectral bins, and limited SNR. There is no widely adopted clinical protocol for DWI near metal since the commonly used EPI trajectory fails completely due to distortion from extreme off‐resonance ranging from 2 to 20 kHz. We present a sequence that achieves DWI near metal with moderate b‐values (400–500 s/mm2) and volumetric coverage in clinically feasible scan times.
Journal Title: Magnetic Resonance in Medicine
Year Published: 2022
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